Mutual suppression

However, in most cases the AW(D) dependencies are distinctly nonlinear (Fig. 9), which gives impulse to further speculations. Clearly, dependencies of this type can result only from mutual suppression of the hydrogel particles because of their nonuniform distribution over the pores as well as from the presence of a distribution with respect to pore size which does not coincide with the size distribution of the SAH swollen particles. A considerable loss in swelling followed from the W(D) dependencies, as shown in Fig. 9, need a serious analysis which most probably would lead to the necessity of correlating the hydrogel particle sizes with those of the soil pores as well as choice of the technique of the SAH mixing with the soil. Attempts to create the appropriate mathematical model have failed, for they do not give adequate results. 

Since a herbal combination has obvious advantages in treatment, the relationships between the herbs used in traditional Chinese medicine (TCM) have been carefully studied and certain types of relationship are identified. They are called the seven relations between herbs, e.g. mutual accentuation, mutual enhancement, mutual counteraction, mutual suppression, mutual antagonism, mutual incompatibility and single effect. Some of these are very useful in treatment, but some are harmful and therefore must be avoided. 

Of the above seven types of relationship, those of mutual accentuation and mutual enhancement are commonly used in treatment mutual counteraction and mutual suppression can also be used, especially to reduce herbs side effects or toxicity. The single herb effect is only used in a limited number of disorders relations of mutual antagonism and mutual incompatibility should be avoided in treatment. 

GH3GF3, /i=Q-27 D, might appear to contradict the theory of the mutual suppression of ionic structures developed above however in these compounds resonance can occur, since valence bond structures of the type... 

In the nitrobenzonitriles, such resonant structures will be mutually suppressed and consequently no large deviations from the additivity rule occur, such as exist when the two groups are of opposite charge so that the resonance is augmented by additional valence bond structures. The dipole moment of />-nitrobenzonitrile is zero, of o-nitrobenzonitrile, 6 19, D and m-nitro-benzonitrile, 3-78, D. Similar behaviour is observed with the di-substituted halogen derivatives of benzene and with the phenylenediamines. 

Because of the pervasive and pernicious occurrence of matrix effects, it is usually advisable to build a routine check on the extent of these effects into any method that has been shown to be subject to them, e.g. the ME/RE procedure (Matuszewski 2003) described in Section 5.3.6a. A particularly deceptive cause of ionization suppression that is not really a matrix effect is the mutual interference of an analyte and its co-eluting SIS (Liang 2003 Sojo 2003), discussed in some detail in Section 5.3.6a. While any level of suppression (or enhancement) of ionization efficiency is undesirable, the mutual suppression of analyte and an isotope-labeled SIS appear to be equal, with minimal effect on the validity of the quantitative analysis, although it may adversely affect limits of detection and quantification as a result of the... 

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